| Specimen ID | 1428749 |
| Group | Crustaceans-Crayfish |
| Genus | Pacifastacus |
| Species | leniusculus |
| Common Name | Signal Crayfish |
| State | OR |
| County | Klamath |
| Locality | Crater Lake |
| Mapping Accuracy | Accurate |
| HUC8 Name | Williamson |
| HUC8 Number | 18010201 |
| HUC10 Name | Crater Lake-Williamson River |
| HUC10 Number | 1801020105 |
| HUC12 Name | Crater Lake |
| HUC12 Number | 180102010501 |
| Map | |
| Collection Year | 1914 |
| Year Accuracy | Estimated |
| Potential Pathway | stocked for forage |
| Status | established |
| Reference 1 |
| Ref. Number: | 31284 |
| Author: | Girdner, S.F., A.M. Ray, M.W. Buktenica, D.K. Hering, J.A. Mack, and J.W. Umek |
| Date: | 2018 |
| Title: | Replacement of a unique population of newts (Taricha granulosa mazamae) by introduced signal crayfish (Pacifastacus leniusculus) in Crater Lake, Oregon |
| Journal: | Biological Invasions |
| Volume: | 20 |
| Issue: | 3 |
| Pages: | 721-740 |
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| Reference 2 |
| Ref. Number: | 30934 |
| Author: | Goldfarb, B. |
| Date: | 2015 |
| Title: | Invasive crayfish in Oregon devastate native newts |
| Publisher: | High Country News |
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| Comments | Although located within the native range, signal crayfish were restricted from entering the waterbody prior to stocking. Stocked in 1914 as forage for rainbow trout and kokanee salmon. |
| Record Type | Literature |
| Earliest Record | drainage |
| Freshwater/Marine | Freshwater |
| Number Stocked | 15,000 |
